Objective To evaluate the value of MRI vertebral bone quality(VBQ)score in preoperative bone mass as-sessment of patients with lumbar internal fixation surgery provides a basis for clinical preoperative evaluation of bone mass in such patients.Methods We selected and evaluated clinical data from 83 patients who underwent lumbar internal fixa-tion at the 903rd Hospital of the Joint Logistics Support Force of the Chinese People's Liberation Army from February 2019 to August 2022.The patients were categorized into two groups based on whether the lowest value was less than-1.0:the low-density group(T value＜-1.0),including cases with osteopenia and osteoporosis(51 cases),and the nor-mal group(T value ≥-1.0,32 cases).Prior to surgery,all patients underwent dual-energy X-ray absorptiometry(DEXA)and MRI.We compared the clinical characteristics(age,gender,BM1)and imaging data between the two groups.Pearson correlation was used to analyze the relationship between the VBQ score and various DEXA T value.Ad-ditionally,we constructed a receiver operating characteristic(ROC)curve to assess the predictive value of VBQ scores for osteopenia.Results There was no significant differences in age,BMI,gender,history of diabetes,and other clini-cal characteristics between the normal group and the low-density group(P＞0.05).The low-density group exhibited lower DEXA femoral neck T values and DEXA overall hip T values compared to the normal group,while the VBQ score was higher in the low-density group(P＜0.05).A negative correlation was observed between the VBQ score and the DEXA femoral neck T value as well as the overall hip T value(P＜0.05).The ROC curve analysis showed that the VBQ score had an AUC area of 0.842(95％CI:0.754-0.930)for predicting abnormal bone mass(osteopenia and osteoporosis),with a sensitivity of 70.60％and specificity of 68.80％.Conclusion The VBQ score demonstrates effective differentia-tion between patients with normal bone mass and those with osteopenia,while also exhibiting correlation with the DEXA T score of patients.This provides a valuable reference for preoperative bone mass assessment in patients undergoing clinical lumbar internal fixation.
Magnetic resonance imagingVertebral bone massLumbar internal fixationPreoperative bone mass
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